Add tests for the return of Cache::clearAll().
Add tests for the return of Cache::clearAll().

tenkoma/cakephp,CakeDC/cakephp,thinkingmedia/cakephp,ionas/cakephp,ndm2/cakephp,mvdriel/cakephp,cakephp/cakephp,garethellis36/cakephp,petteyg/cakephp,tgr0ss/cakephp,elboletaire/cakephp,dakota/cakephp,tgr0ss/cakephp,tenkoma/cakephp,elboletaire/cakephp,jeffblack360/cakephp,HavokInspiration/cakephp,petteyg/cakephp,berrygoudswaard/cakephp,garethellis36/cakephp,HavokInspiration/cakephp,berrygoudswaard/cakephp,cakephp/cakephp,nrother/cakephp,ndm2/cakephp,tenkoma/cakephp,petteyg/cakephp,cakephp-fr/cakephp,davidyell/cakephp,CakeDC/cakephp,CakeDC/cakephp,dakota/cakephp,HavokInspiration/cakephp,petteyg/cakephp,davidyell/cakephp,ADmad/cakephp,thinkingmedia/cakephp,ADmad/cakephp,thinkingmedia/cakephp,ionas/cakephp,jeffblack360/cakephp,cakephp-fr/cakephp,elboletaire/cakephp,ADmad/cakephp,nrother/cakephp,garethellis36/cakephp,nrother/cakephp,mvdriel/cakephp,ndm2/cakephp,CVO-Technologies/cakephp,CVO-Technologies/cakephp,garethellis36/cakephp,jeffblack360/cakephp,CakeDC/cakephp,davidyell/cakephp,dakota/cakephp,cakephp-fr/cakephp,ADmad/cakephp,ionas/cakephp,ndm2/cakephp,mvdriel/cakephp,cakephp/cakephp,dakota/cakephp,cakephp/cakephp,tgr0ss/cakephp,CVO-Technologies/cakephp,tenkoma/cakephp,mvdriel/cakephp,berrygoudswaard/cakephp